story: Los Angeles (CNN) -- Dr. Conrad Murray, who was Michael Jackson's personal physician, is refusing to testify in the wrongful death lawsuit that the singer's mother filed against concert promoter AEG Live. 
  
  If called, he will plead the fifth so as not to incriminate himself, the doctor said in a statement sent to the Jackson family. 
  
  Murray has never been questioned under oath about Jackson's death, which occurred on his watch. 
  
  He did not testify at his trial, where he was found guilty of causing Jackson's death on June 25, 2009, by administering a deadly overdose of sedatives and the surgical anesthetic propofol in what he told police was an attempt to cure the singer's insomnia. 
  
  He is serving a four-year sentence but could be out in two. 
  
  On Monday, he was supposed to be deposed in the wrongful death suit. 
  
  But lawyers for Jackson's mother, Katherine, and her three children called off their jailhouse visit because Murray swore "he would not answer any questions at the deposition or the trial," Jackson lawyer Kevin Boyle told CNN. 
  
  He said the Jackson case would not suffer without his testimony. 
  
  AEG's lawyer suggests the Jacksons canceled Murray's deposition because his testimony would "destroy" their case. 
  
  "They are not interested in the truth," said the lawyer, Marvin Putnam. 
  
  Asserting his 'Fifth Amendment privilege' 
  
  The cancellation came after Murray's attorney Valerie Wass sent the Jacksons a sworn statement signed by Murray making it clear he would not answer any questions while his involuntary manslaughter conviction in Michael Jackson's death is being appealed. 
questions: Who was the singer's doctor?
questions: Is he involved in the lawsuit?
questions: Who filed the lawsuit?
questions: Against who?
questions: What was the lawsuit about?
questions: Did he testify when he was the subject of a suit?
questions: When did Jackson die?
questions: What year?
questions: He died of what?
questions: Of what?
questions: And what else?
questions: What is the singer's mother's name?
answers: Conrad Murray
answers: Dr. Conrad Murray, who was Michael Jackson's personal physician,
answers: he refused to testify in it
answers: who was Michael Jackson's personal physician, is refusing to testify in the wrongful death lawsuit 
answers: the singer's mother
answers: lawsuit that the singer's mother filed
answers: AEG Live.
answers: lawsuit that the singer's mother filed against concert promoter AEG Live. 
  
answers: wrongful death
answers: the wrongful death lawsuit
answers: No
answers: He did not testify at his trial
answers: June 25
answers: Jackson's death on June 25
answers: 2009
answers: Jackson's death on June 25, 2009
answers: an overdose
answers: Jackson's death on June 25, 2009, by administering a deadly overdose
answers: sedatives
answers: deadly overdose of sedatives
answers: Yes
answers: overdose of sedatives and the surgical anesthetic propofol 
answers: Katherine
answers: Jackson's mother, Katherine